Door lock



R. MARPLE DOOR LOCK April 28, 195's 3 Sheets-Sheet 1 iled Jan. 5, 1955 INVENTOR. F0770 Mary/e April 28, 1959 R. MARPLE 2,883,847

DOOR LOCK Filed Jan, 3, 1955 s Sheets-Sheet 2 I VENTOR. Fez/0 477/6 r-7- Ivy/S April 28, 1959 R. MARPLE 2,883,847

DOOR LOCK Filed Jan. 3, 1955 3 Sheets-Sheet 3 INVENTOR. 34/70 f/dr vk United States Patent DOOR LOCK Rollo Marple, Jackson, Mich., assignor to Hancock Industries, Inc., a corporation of Michigan Application January 3, 1955, Serial No. 479,270

13 Claims. (Cl. 70-135) This invention relates to door latches, and more particularly to latches adapted for use on automotive vehicle doors and similar installations.

It is an object of the present invention to provide a novel and improved form of door latching device in which the latching and locking elements are included in a unitary assembly and are adapted to be actuated by coaxial locking and delatching means. More particularly, it is an object to provide a latching device comprising a unitary assembly which includes inside and outside rollbacks and a locking member for the outside rollback, the outside rollback and locking member being so arranged that they are both operable by a separately mounted unit slidable and rotatable on a single axis.

It is also an object to provide the combination of a latching device and an actuator therefor, this combination being adapted for use on vehicle doors or similar installations in such manner that unlatching may be accompanied merely by pressing a push button, and locking results from inserting and turning a key in the same push button. More particularly, it is an object to provide such a combination in which the latching mechanism has inside and outside rollbacks, the outside rollback being movable by said push button, the locking means being applied to the outside rollback and being actuatable by the inside rollback as well as by key rotation.

It is another object to provide a latching mechanism in which the actuating means for the rollback locking member is located at the same level on the mounting plate as the rollback and locking member themselves, thus eliminating the need for additional parts for transferring the key movement at one level to the locking member at another level, and increasing the flexibility of location of the latching mechanism within the door body.

It is a further object to provide the combination of a latching device and actuating means as aforesaid, in which the combined structure is of simple and compact character, is easily installable in conventional vehicle doors and uses conventional principles of locking and latching.

Other objects, features, and advantages of the present invention will become apparent from the subsequent description, taken in conjunction with the accompanying drawings.

In the drawings:

Figure 1 is a front elevational view of a latching mechanism incorporating the novel principles of this invention, showing the base portion of the mounting plate and its associated parts;

Figure 2 is a side elevational view of a latching mechanism showing the flange and connected elements, parts being omitted for clarity;

Figure 3 is a top plan view of the latching mechanism showing the disposition of the cover and outside rollback;

Figure 4 is a detail view in elevation showing the outside rollback and rollback extension;

Figure 5 is a detail view in elevation of the actuating lever and the cooperating portion of the locking member;

ice

Figure 6 is a detail view in elevation of the cover for the mounting plate;

Figure 7 is a detail view in plan of the locking mems. her and its associated parts;

Figure 8 is a schematic view in elevation of a portion of a vehicle door incorporating the novel latching mech anism, the parts being in their latching and locking position;

Figure 9 is a view similar to Figure 8 showing the parts in their unlocking and delatching position;

Figure 10 is a plan view, partly in cross section, of a preferred actuating means for use with the novel latching mechanism, showing the actuating means installed in a vehicle door handle and in its latching position; and

Figure 11 is a view similar to Figure 10 with the actuating means in its delatching position.

The invention comprises a latching mechanism having a mounting plate, and in the preferred embodiment the latch is of a known toothed rotor type with a plurality of dogging cams which perform a take-up function. The latching mechanism is installable in vehicle doors or other installations and has inside and outside rollbacks which are independently operable to retract the dogging earns, the outside rollback being engageable by an outside actuator moving in a straight line in one direction. A locking member is carried by the mounting plate and is movable into locking relation with the outside rollback, and in particular with an extension which is movably mounted thereon in the illustrated embodiment. Means are provided between the inside rollback and the locking member whereby movement of the inside rollback in a direction opposite its unlatching direction will cause locking of the outside rollback. An actuating lever is secured to the mounting plate at approximately the level of the outside rollback and locking member. This lever is movable in a plane parallel to the direction of movement of the outside rollback and has one end connected to the locking members. The opposite end of the actuating lever is provided with means adapting it for actuation by an actuator rotatable on an axis in approximate alignment with the path followed by the outer portion of the outside rollback. In the illustrated embodiment, the actuating lever is provided with teeth which mesh with a toothed sleeve carried by the mounting plate and rotatable on an axis coincident with the straight line path of the outside rollback actuator. The actuator in the illustrated embodiment is a combined actuator for the rollback and locking member. It comprises a hollow cylindrical push button which is slidably mounted in the door or a handle thereon adjacent the latching mechanism. A cylinder lock is mounted within the push button and is carried thereby during its sliding movement. A shaft of noncircular cross section projects from the cylinder lock and through the rotatable toothed member, being engageable with the outside rollback. Sliding movement of the push button and lock thus causes unlatching movement of the outside rollback. When a key is inserted in the cylinder lock and turned, the shaft is rotated causing rotation of the toothed sleeve and movement of the actuating lever so that the locking member may be moved between its locking and unlocking positions. Kickoff means are also provided on the actuating lever for unlocking the mechanism when the door is unlatched by the inside rollback or is slammed.

Referring more particularly to the drawings, Figures l-7 show a preferred embodimentof the latching mechanism, generally indicated at 21. The mechanism comprises a mounting plate generally indicated at 22 having a base portion 23 and a flange portion 24 sub stantially at right angles. A cover 25, described below in detail, is secured to base 23 in spaced parallel relation I 3 therewith by tabs 26. An outboard bearing 27 is secured to the lower portion of base 23 and supports a multitoothed rotary bolt 28 of conventional construction. Bolt 28 is carried by a pin 29 secured between outboard hearing 27 and cover 25. A plurality of conventional dogging cams 31 are mounted between base 23 and cover 25 by means of a pin 32, this pin passing through a striker plate 33 protruding from base 23 and cooperable with the keeper (not shown). One of the cams 31, termed the lifting cam, is provided with an extension 34 engageable by an inside rollback and an extension 35 engageable by an outside rollback.

The inside rollback comprises a lever 36 pivoted at 37 to flange 24. Inside rollback 36 has an arm 38 adapted to be connected to a remote control (not shown) on the inside of the door, and an arm 39 engageable with lifting cam extension 34. Inside rollback 36 is movable from an intermediate position shown in Figure 2 in either a counterclockwise or a clockwise direction. When moved in its counterclockwise or unlatching direction, arm 39 engages extension 34, rotating dogging cams 31 clockwise as shown in Figure l to undog bolt 28. Springs 41 are provided for urging dogging earns 31 in their latching direction against the bolt teeth. When moved in a clockwise direction as seen in Figure 2, inside rollback 36 serves to lock the outside rollback in a manner later described.

Outside rollback 42 is pivoted at 43 to base 23 and has a plate portion 44 extending transversely to base 23 and engageable by a slidable outside actuator. As seen best in Figure 4, a rollback extension 45 is pivoted at 46 to an intermediate portion of rollback 42 and extends therefrom in the approximate direction of movement of portion 44 of the rollback when moved by the outside actuator. The outer end of extension 45 has a shoulder 47 engageable with lifting cam extension 35 when outside rollback 42 is rotated clockwise in Figure l. A tab 48 on rollback 42 and a tab 49 on cover 25 guide extension 45 during its reciprocating movement so that shoulder 47 is always in engagement with lifting cam extension 35. It will be noted that the spring 41 which engages lifting cam 31 serves to urge extension 45 and rollback 42 to the left in Figure 1 when the lifting cam is in engagement with extension 45. A spring 51 mounted on pin 43 is engageable with rollback plate 44 to urge rollback 42 in a counterclockwise direction independently of the position of the lifting cam. An arcuate elongated slot 52 is provided in cover 25, and pin 46 which connects rollback 42 and extension 45 is disposed within this slot, thus providing limit positions for the rollback and extension.

The locking means for outside rollback 42 comprises a locking member 53 pivoted at 54 to flange 24. Locking member 53 has an arm 55 engageable by a shoulder 56 on inside rollback 36 when the latter is rotated clockwise in Figure 2. The locking member includes a blocking portion 57 disposable in blocking relation with the outer end 58 of rollback extension 45, as seen in Figure 7. Locking member 53 also is provided with an actuating tab 59 by means of which it may be rocked between its locking and unlocking positions by a key actuated member. When locking member 53 is in its unlocking position as shown in Figures 1 and 2, locking portion 57 thereof is disposed above the path of movement of end 58 of rollback extension 45. Rollback 42 may thus be reciprocated freely without interference from the locking member. However, when locking member 53 is rotated counterclockwise in Figure 2 to its locking position, blocking portion 57 is moved downwardly into the path of end 58, thereby blocking unlatching movement of rollback 42.

The means for controlling locking member 53 from the outside key station includes a rotatable toothed sleeve 61 and an actuating lever 62. As shown in Figure l, sleeve 61 is mounted on a flanged portion 63 of cover 25, the adjacent portion 64 of the cover being recessed to accommodate the sleeve. Flange 63 extends transversely to base 23 and is so inclined that the axis of rotation of sleeve 61 is inclined toward plate 44 on rollback 42. A plurality of teeth 65 are formed on one side of sleeve 61, which is supported for rotation in an aperture 66 of flange 63, as seen in Figure 3. A non-circular central aperture 67 is provided in sleeve 61, the shape of this aperture being square in the illustrated embodiment. It will be understood that other means could be used for actuating lever 62 within the principles of the invention.

Actuating lever 62 is pivoted at 68 on base 23 and has a plurality of teeth 69 at one end which mesh with teeth 65 on sleeve 61. The opposite end of lever 62 is provided with a widened slot 71 within which locking member tab 59 is disposed, as seen in Figure 5. Lever 62 is rockable between an unlocking position shown in Figure l clockwise to a locking position shown in Figure 8. When lever 62 is moved to its unlocking position, locking member 53 is swung clockwise to the position shown in Figure 2 so that its blocking portion 57 is out of alignment with rollback extension end 58. When lever 62 is swung towards locking position, locking member 53 is swung counterclockwise in Figure 2 so that locking portion 57 thereof is in blocking relation with end 58..

It will be noted that although lever 62 is at approximately the level of rollback 42 and locking member 53, it is in non-interfering relation with rollback 42 and its associated parts. In particular, the major portion of lever 62, as shown in Figure 3, is adjacent base 23 whereas rollback 42 and rollback extension 45 are closer to cover 25 so that these parts may move independently without interference. As seen best in Figure 3, that portion of lever 62 which includes slot 71 is oflfset from the remainder of lever 62 so as to engage tab 59 of locking member 53.v

Means are provided on lever 62 for providing a kickoff action when the inside rollback is operated or the door is slammed, in order to move locking member 53 to its unlocking position. This means comprises a downward extension 72 on lever 62 beneath slot 71. Extension 72 is disposable in the path of lifting cam extension 35 when the latter is swung clockwise in Figure l. A cam surface 73 on extension 72 is so formed that when lifting cam extension 35 is swung clockwise, lever 62 will be cammed counterclockwise thus moving locking member 53 into unlocking position. This clockwise rotation of lifting cam extension 35 may be the result of either rotation by inside rollback 36 or rotation by slam ming the door, in which case bolt 28 is rotated counterclockwise in Figure 1. An overcenter spring 74 is con nected between locking member 53 and flange 24 for holding the locking member in its locking and unlocking positions.

The actuating means for outside rollback 42 and locking member 53 is shown in Figures 10 and 11 and comprises a hollow cylindrical push button 74 which encloses a cylinder lock 75. In the illustrated embodiment push button 74 is mounted for sliding movement within one end of a handle 76 fixedly secured to the outside panel 77 of a door 78. Latching mechanism 21 is secured in this case to door jamb 79 with plate 44 of outside rollback 42 aligned with the axis of push button 74. It will be understood however that other ways of mounting push button 74 relative to latching mechanism 21 are contemplated within the principles of the invention. Cylinder lock 75 is rotatable within push button 74 by means of a key 81, and the push button together with the cylinder lock are slidable as a unit'within a recess 82 in handle 76. A guiding shoulder 83 is secured to the inner end of push button 74, and this shoulderhas a pair of projections 84 guided in corresponding slots 85 in recess 82 so as to prevent rotation of the push button itself. A shoulder 86 on cylinder lock 75 and a flange 87 on push button 74 prevent relative sliding movement between the cylinder lock and push button 74. An apertured plate 88 is fixed within the outer end of recess 82 and a compression spring assess? 89 is disposed between plate 88 and the projecting end of cylinder lock 75, urging the cylinder lock and push button into its projecting position as shown in Figure 1!).

A shaft 91 of square cross section is secured at one end to cylinder lock 75 by a conventional rotary lostvmotion connection 92 and extends through spring 89 and plate 88 and through the square recess 67 of sleeve .61, The outer end of shaft 91 is disposed adjacent plate 44 of outside rollback 42. It will therefore be seen that if push button 74 is moved inwardly from the position shown in Figure to that of Figure 11, shaft 91 will engage plate 44 of outside rollback 42, unlatching the door if locking member 53 is in its unlocking position. When push button 74 is in its projected position, rotation of cylinder lock 75 by key 81 will cause corresponding rotation of sleeve 61, and movement of locking member 53 between its locking and unlocking positions. Shaft 91 preferably has a sliding fit within aperture 67 so that reciprocating movement of the shaft may take place. Because of the lostmotion connection with cylinder lock 75, shaft 91 will rotate freely when lever 62 is moved to its unlocking position.

Operation Assuming an initial condition in which the door is closed and the latching mechanism is locked, the parts will be in the position shown in Figure 8. When in this position, dogging cams 31 will be in latching relation with bolt 28, outside rollback extension 45 will be in engagement with lifting cam extension 35, and locking member 53 will be in blocking position with respect to extension 45. If the operator desires to enter the car from the outside, key 81 is inserted in cylinder lock 75 within push button 74 and turned. This will rotate shaft 91 and sleeve 61, pivoting actuating lever 62 counterclockwise from the position shown in Figure 8 to the position shown in Figure 9. This movement will cause blocking member 53 to move into its unblocking position with respect to rollback extension 45. Key 81 is then removed and push button 74 depressed as shown in Figure 11. Shaft 91 will engage outside rollback 42, swinging the rollback clockwise and moving rollback extension 45 to the right. Dogging cams 31 will be moved into unlatching position with respect to bolt 28 and the door may be opened. Release of push button 74 will cause spring 89 to urge the push button into projected position, and springs 41 will return dogging cams 31 into latching position with respect to bolt 28. Outside rollback 42 will return to its normal position, with plate 44 thereof adjacent the end of shaft 91.

Should the operator decide to lock the door while in? side the car, inside rollback 36 is rotated clockwise in Figure 2, moving locking member 53 into locking position with respect to the outside rollback. Should inside rollback 36 be used to open the door, movement of lifting cam extension 35 to the right in Figures 8 and 9 will cause it to engage kick-off extension 72 of lock actuating lever 62, moving locking member 53 to its unlocking position. This action is also obtained when the door is slammed with locking member 53 in locking position. It should be observed that push button 74 and its associated parts do not interfere in any way with this kick-off action, since the counterclockwise rotation of actuating lever 62 will simply cause free rotation of shaft 91 due to the lostmotion connection with cylinder lock 75.

While it will be apparent that the preferred embodiment of the invention herein disclosed is well calculated to fulfilll the objects above stated, it will be appreciated that the invention is susceptible to modification, variation and change without departing from the proper scope .or fair meaning of the subjoined claims.

What is claimed is:

1. In a latching mechanism, a mounting plate having a base and a flange, a bolt rotatably mounted on said base, dogging means engageable with said bolt, an outside rollback movably mounted on said base,-a rollback extension carried by said rollback and engageable with said dogging means when moved toward said flange, a portion on said outside rollback extending transversely to said base and adapted for engagement by an outside actuator when moved in a straight line toward said flange, a locking member pivotally mounted on said flange and having a portion movable into and out of locking relation with said rollback extension, an inside rollback pivoted on said flange and movable from an intermediate position in one direction to engage said dogging means and in the opposite direction to move said locking member into its locking position, an actuating lever pivoted on said base engageable with said locking member, a kick-elf surface on said lever engageable by said dogging means when moved in an undogging direction ,to move said locking member to its unlocking position, ,a toothed portion on said lever adjacent said rollback portion, a cover secured n spac p l l relation t sai base a d h i a flange extending transversely to said base, and a sleeve rotatably mounted on said cover flange and having teeth meshing with the teeth of said actuating lever, said sleeve having a non-circular central aperture through which said straight line passes.

2. A latching mechanism and actuator therefor comprising a mounting plate, a bolt carried by said mounting plate, dogging means movably carried by said mounting plate and engageable with said bolt, a rollback pivoted on said mounting plate and engageable with said dogging means when moved in one direction, a portion on said rollback extending transversely to said direction of movement, a locking member on said mounting plate movable between an unlocking and a locking position with respect to said rollback, an actuating member pivoted on ,said mounting plate on an axis parallel to said rollback pivot and engageable with said locking member, a portion on said actuating member movable in a plane extending in the same direction as said direction of movement, a shaft having an end engageable with said rollback portion, means supporting said shaft separately from said mounting plate for rotary and sliding movement on an axis extending in the same direction as said direction of movement, and operative connecting means between said shaft and actuating member responsive to rotary movement of said shaft for moving said actuating member.

3. The combination according to claim 2, said actuating member comprising a lever pivoted on said mounting plate, said connecting means comprising a sleeve rotatably carried by said mounting plate and having a non-circular central aperture, said shaft being of corresponding noncircular cross section and extending through said sleeve.

4. The combination according to claim said mounting plate having a base and a flange, said rollback being mounted on said base, said locking member beingmounted on said flange, and a second rollback mounted on said flange and movable from an intermediate position in one direction to engage said dogging means and in the opposite direction to move said locking member into locking position.

5. In a latching mechanism and an actuator therefor adapted for use with vehicle doors or the like, amounting plate having a base and a flange, a boltrotatably mounted on said base, means for securing said mounting plate to the inside of a vehicle door with said bolt projecting through the free edge of said door, dogging means pivotally mounted on said base, resilient means urging said dogging means into engagement with said bolt, anoutside rollback pivoted on said base, a rollback extension pivoted to said rollback and engageable with said dogging means when said rollback is swung toward said flange, a portion on said rollback extending transversely to said direction of movement, a locking member mounted on said flange and movable between an unlocking position and a locking position with respect to said rollback extension, an i e l b ck on a flange a movable into enga e ment with said dogging means independently of said outside rollback, an actuating lever pivoted on said base at approximately the level of said locking member and engageable with said locking member, a portion of said lever being movable in a plane transversely to said rollback portion, a hollow cylindrical push button, means mounting said push button for non-rotary sliding movement on the outer panel of a vehicle door in a direction toward and away from said mounting plate flange, a spring urging said push button away from said flange, a key actuated cylinder lock rotatably mounted within said push button, a shaft of non-circular cross section secured to said cylinder lock and projecting therefrom toward said flange, the outer end of said shaft being in abutting relation with said outside rollback portion, a sleeve rotatably carried by said mounting plate and having a non-circular central aperture, said shaft extending through said aperture, and mutually engageable teeth between said sleeve and said actuating lever, whereby rotation of said shaft will cause operative movement of said lever.

6. In a latching mechanism, a mounting plate, a bolt carried by said mounting plate, dogging means for said bolt, an outside rollback connected to said dogging means, a portion on said outside rollback adapted for engagement by an outside actuator movable in a straight line in one direction, a locking member movable between an unlocking position and a locking position preventing unlatching movement of said rollback, an actuating lever pivoted on said mounting plate, said actuating lever having one end engageable with said locking member, a plurality of teeth at the opposite end of said lever, an actuator for said actuating lever comprising a sleeve supported for rotation on an axis coincident with said straight line, and teeth on said sleeve meshing with said lever teeth.

7. In a latching mechanism, a mounting plate, a bolt rotatably mounted on said mounting plate, a detent for said bolt having an upwardly extending arm, an outside rollback connected to said arm, a portion on said outside rollback adapted for engagement by an outside actuator movable in a straight line in one direction, a locking member located above the level of said bolt and movable between an unlocking position and a locking position preventing unlatehing movement of said rollback, a locking member actuating lever on said mounting plate above the level of said bolt, an actuator for said actuating lever rotatable on an axis parallel to said straight line, and an extension on said lever engageable by said detent arm when the detent is moved in an unlatching direction, the shape of said extension being such that said detent movement will cam said lever in a direction moving said locking member into unlocking position.

8. In a latching mechanism, a mounting plate having a base and a flange, a bolt rotatably mounted on said base, a detent for said bolt pivoted on said 'base and having an upwardly extending arm, a rollback movably mounted on said base and engageable with said arm when moved towards said flange to unlatch said bolt, a plate on said rollback adapted for engagement by an actuator when moved in a straight line towards said flange, a locking member mounted on said flange above the level of said bolt and movable between an unlocking position and a locking position with respect to said rollback, an actuating lever pivoted on said base alongside said rollback above the level of said bolt and engageable at one end thereof with said locking member, and means rotatable on an axis parallel to said straight line and engageable with the other end of said actuating lever for moving the same.

9. In a latching mechanism, a mounting plate having a base and a flange, a bolt rotatably mounted on said base, dogging means pivoted on said base and engageable with said bolt, an outside rollback pivoted on said base, an extension pivoted on said rollback above the level of said bolt and engageable with said dogging means when moved toward said flange, a portion on said outside rollback adapted for engagement by an actuator when moved in a straight line toward said flange, a locking member movably mounted on said flange above the level of said bolt and movable between an unlocking position and a locking position with respect to said extension, an inside rollback mounted on said flange and movable in one direction into engagement with said dogging means and in the opposite direction into engagement with said locking member to move the latter into locking position, an actuating lever pivoted on said base alongside said rollback at approximately the level of said locking member and engageable at one end thereof with said locking member, and means rotatable on an axis parallel to said straight line and engageable with the other end of said actuating lever for moving the same.

10. A latching mechanism and actuator therefor comprising a mounting plate, a bolt carried by said mounting plate, dogging means movably carried by said mounting plate and engageable with said bolt, a rollback pivoted on said mounting plate and engageable with said clogging means when moved in one direction, a portion on said rollback extending transversely to said direction of movement, a locking member on said mounting plate movable between an unlocking and a locking position with respect to said rollback, a rollback extension pivoted on said rollback and having a first portion engageable with said dogging means and a second portion adapted to be locked by said locking member, an actuating member on said mounting plate engageable with said locking member, a portion on said actuating member movable in a plane extending in the same direction as said direction of movement, a shaft having an end engageable with said rollback portion, means supporting said shaft separately from said mounting plate for rotary and sliding movement on an axis extending in the same direction as said direction of movement, and operative connecting means betwen said shaft and actuating member responsive to rotary movement of said shaft for moving said actuating member.

11. A latching mechanism and actuator therefor comprising a mounting plate, a bolt carried by said mounting plate, dogging means movably mounted on said mounting plate and engageable with said bolt, a rollback pivoted on said mounting plate and engageable with said dogging means when moved in one direction, a portion on said rollback extending transversely to said direction of movement, a locking member on said mounting plate movable between an unlocking and a locking position with respect to said rollback, an actuating member pivoted on said mounting plate on an axis parallel with said rollback pivot and engageable with said locking member, a portion on said actuating member movable in a plane extending in the same direction as said direction of movement, a hollow cylindrical push button, means mounting said push button separately from said mounting plate for non-rotary sliding movement, a key actuated cylinder lock rotatably and non-slidably mounted within said push button, a shaft secured to said cylinder lock and extending into abutting relation with said rollback portlon, and means connecting said shaft with said actuating member for translating rotary movement of said shaft into operative movement of said actuating member.

12. A latching mechanism and actuator therefor comprising a mounting plate, a bolt carried by said mounting plate, dogging means movably mounted on said mounting plate and engageable with said bolt, a rollback on said mounting plate and engageable with said dogging means when moved in one direction, a portion on said rollback extending transversely to said direction of movement, a locking member on said mounting plate movable between an unlocking and a locking position with respect to said rollback, an actuating member on said mounting plate and engageable with said locking member, a portion on said actuating member movable in a plane extending in the same direction as said direction of movement, a hollow cylindrical push button, means mounting said push button separately from said mounting plate for nonrotary sliding movement, a key actuated cylinder lock rotatably and non-slidably mounted within said push button, a shaft secured to said cylinder lock and extending into abutting relation with said rollback portion, means connecting said shaft with said actuating member for translating rotary movement of said shaft into operative movement of said actuating member, said last mentioned means comprising a sleeve rotatably carried by said mounting plate and having a central non-circular aperture, said shaft being of corresponding non-circular cross section and extending through said aperture, said actuating member comprising a lever pivoted on said mounting plate, and mutually en ageable teeth on said lever and sleeve.

13. The combination according to claim 12, further provided with a kick-off extension on said lever engageable by said dogging means when moved in an unlatching direction to move said lever into unlocking position, and a lost-motion connection between said shaft and said cylinder lock for permitting said unlocking movement to take place.

References Cited in the file of this patent UNITED STATES PATENTS 2,557,468 Roethel June 19, 1951 2,646,300 Roethel July 21, 1953 2,705,882 Craig Apr. 12, 1955 2,705,884 Craig Apr. 12, 1955 2,706,129 Craig Apr. 12, 1955 2,706,130 Roethel Apr. 12, 1955 2,716,569 Roethel Aug. 30, 1955 2,793,898 Roethel May 28, 1957 

